TR: push/pull dynamometer/Calibrated beam keyweight measure

[gordon stelter]

This tool could be used with a bell crank to function
properly in its preferred horizontal orientation, set
up on a stand for uniformity.
     Hey! Why not a calibrated beam on a pivot, on a
stand, with sliding weights? As the weights were slid
along the beam to the correct point, down and upweight
measurements could be very easily and accurately
taken. Anyone doing this?
     Thump

--- Isaac OLEG <oleg-i@wanadoo.fr> wrote:
> 
> Hello,
> 
> Here are the tool I was lucky to find ,it is a
> simple one, with a
> memory switch, and it is first intended to be used
> horizontally so a
> few grams are to be added to the result (given by
> the manual) if
> vertical move is to be used.
> 
> It is in fact accurate enough, but one may be
> attentive not to touch
> the jacks button or the reading is false. the
> advantage is that you
> read each time the highest spot during the hammer
> travel, may be more
> surely that with weights (???)
> it is a bit strange to use at first because one have
> to push on the
> key, straight, an with an even motion, and the
> weight of the tool is
> part of the move of course. But the readings are
> similar (2-3g near)
> to the weights.
> if a good setup could be made, the same kind of tool
> could be used to
> input automatically DW UW measures in a computer,
> Iam sure David is
> working on that is not it David ?
> 
> 
> this one was made in Italy, it was cheap (in a
> disrupcy sale) $20 or
> so.
> I have no idea where to find another one actually.
> 
> Greetings
> > I had not heard of a 'push/pull dynamometer' but a
> Google
> > search shows 70
> > results. I see that there is a very wide range of
> prices
> > for such a device;
> > can you be more specific about the type?
> >
> > Does anyone else use one of these rather than
> weights?
> >
> > Scott Jackson
> > Australia
> >
> > ----- Original Message -----
> > From: Isaac OLEG oleg-i@wanadoo.fr
> > To: "Pianotech" <pianotech@ptg.org>
> > Sent: Wed, 7 May 2003 16:55:47 +0200
> > Subject: Key Weight (OT)
> >
> > >I have find a push/pull dynamometer to check
> UW/DW without
> > having to
> > >carry all that stuff.
> >
> >
> >
> 

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> ATTACHMENT part 3 image/jpeg name=EPSN0064#2.JPG
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